Two-way plow



W. G. TOLAND ETAL June 24, 1958 TWO-WAY PLOW 5 Sheets-Sheet l Filed Oct.10, 1956 .N.m\ Nl Jim/enf@ 74.5.'

`June Z4, 1958 w. G. 'roLAND ETAL Two-WAY PLOW 3 Sheets-Sheet 2 FiledOct. 10, 1956 -/Mm www um Nb m.

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Wayne OTZazcZ Zzn fons! u nr June 24, 1958 w. G. 'roLAND ETAL 2,839,979

TWO-WAY PLOW 3 Sheets-Sheet 3 Filed 0G13. 10, 1956 l@ nDZIZ UnitedStatesv Patenti TWG-WAY rPLOW Wayne G. Toland and Donald A. Murray,Stockton, Calif., assignors to International Harvester Company, acorporation of New Jersey Application october 10, 1956, serial No.615,195

s claims. (cron-26) This invention relates to two-way plows of therollover type and particularly to operating means therefor. Morespecifically the invention concerns the type of twoway plow that isrotatable about a longitudinal axis with respect to the direction oftravel to alternately dispose the plow Yunits in operation, and hasfor'its object the provision of novel operating mechanism for rockingthe plow carrier about its axis and for locking thevoperating plow lunitin position while the other unit is held in anA inoperative position.

Another object ofthe invention is the provision in a two-way roll-overplow of improved operating apparatus for reversing the operation of theplow units, latch means for holding the working plow unit in operatingposition and ra latch actuating device actuated by the operatingapparatus for releasing the latch means'automatically.

Other objects and advantages of the invention will become clear from thefollowing detailed description when read in conjunction with theaccompanying drawings wherein: l

Figure 1 is a view in side elevation of therear end of a tractorprovided with an implement-attaching structure of the two-point type andhaving mounted thereon a two-way plow of the roll-over type embodyingthe features of this invention; y

Figure 2 is a front elevation -of the plowV of this invention detachedfrom the tractor, with parts removed, and showing the operatingmechanism therefor;4

Figure 3 is a detail of the latching apparatusshown in Figure 2 withthe-latch released so lthat the plow carrier can be turned to place thealternately operating plow unit in operating position;

Figure 4 is a plan view of the structure shown in Figure 2, with partsremoved, and

Figure 5 is a section taken on the -line 5 5 of Figure 2.

The plow of this invention comprises a main supporting frame and aplow-carrying subframe 11. f The main frame includes a longitudinallyextending tubular member 12 having affixed near its forward end andextending laterally therefrom tubular frame members V13 and 14 havingaixed to the outer yends thereof generally triangularly shaped plates 15and 16, respectively. Plates 15 and 16 are connected by a transverselyextending channel-shaped brace 17. Laterally spaced prongs or shafts 18are aixed to the laterallyrprojecting main frame members 13 and 14 andextend forwardly therefrom for sliding reception in a pair of elongatedsocket members 19, only one ofY which is shown, alxed to the end of adrawbar 20, forming a part of the implement-attaching structure of atractor 21. Although .the implement-attaching structure of the tractorforms no part of this invention, it might be briefly noted that theprongs 18 are held intheir respective sockets 19 by a locking device,indicated at 22, of a well-known type .and that .the drawbar 20, `aswellas .the implementconr ICC 2,839,979

Patented June 24, 1958 -end with a. bearing 26 having a flange 27 on theoutside and engaging the tubular frame portion 12. A rearjbearing 28 isreceived lin the rear end of tubular member 12 and is also provided witha kflange 29engaging the rim of the tube.

The tool carrier or subframe 11 is in the form of an elongated tubularbeam 30, the forward end of which is rotatably receivable in tubularmember 12, being separated therefrom at its forward end by the frontbearing 26 and spaced from bearing 28 by steel inserts 31 aflixed tobeam 30.

The tool beam 30 has mounted thereon left and righthand Vplow units 32and 33, respectively, spaced 180 apart Land adapted for rotation aboutthe axis of frame member 12 and tool beam 30 to place the alternatelyoperating plow unit in operating position while the other is .moved toan inoperative position. .Y

The forward end of the plow carrier or subframe 11 extends beyond theforward end of main frame member 12 and is covered by a bell-shapedhousing 34 suitably secured thereto and serving as a support for arotatable and drivable member in the form of a sprocket wheel 3S mountedfor coaxial rotation with the tool beam Si) v and spaced from the faceof the bell housing by a plurality of bosses 36. .Sprocket wheel 35 issecured to the bell housing 34 by a plurality of bolts 37 passingthrough the sprocket wheel andreceived in threaded openings in thebosses 36. Rotation-of sprocket wheel 35 thus revolves subframe 11 andthe plow units .32 and 33.

Sprocket wheel 35 is driven to revolve the tool carrier v 'byYafhydraulic ram 38 comprising acylinder 39 pivotally connected by av pin40 to a lug 41 affixed to end plate 16.y The hydraulically operated ram38 extends transversely of the vimplement,parallel to brace 17 and mainframe members 13 and 14, and piston rod 42, slidable in cylinder 39, isprovided at-its end with a clevis -43 connected bya pivot pin 44 withva'lug 45 Vsecured to a transversely extending guide bar or track 46slidable in two or more tracks 47 secured to `and depending from bracey17. A lug 48 is aixed'to one end of the track v46 and is suitablysecured to an endless drive chain y49 trained about sprocket wheel 3Sand an idlerwheel` Si) mounted upon a bracket 51 secured to the plate15.`

Fluid under pressure is supplied to the hydraulic ram 3S through exiblehose lines 52 from a source of fluid under pressure on the tractor 21,not shown. Extension and retraction of piston rod 42 in cylinder '39reciprocates the connector 48 on drive chain 49 and revolves thesprocket wheell 35 and subframe v11 in opposite directions toalternately place the plow units 32 and 33 in operation.

The plow carrier inthe form of sub-frame 11 is revolved relative to mainframe 10 to alternately dispose one of the plowing units in operatingposition while the other unit is moved, tothe non-operating position.`Each of the plow units is locked in its operating position by latchmeans including latchparts 53 and 54 secured to the respective plates15`and 16 by bolts 55, each of which is slidably receivable in a slot55a in the end plates so that the latch parts 53 and 54 can be adjustedto level the operating plow unit.

A movable latch member -56 includes a pair of spaced straps 57 extendingat right angles to the axis of the tool carrier'30 `'and havingtheirnner ends-secured bylbolts'SS opposite sideswofrthe bell-shapedhousing 34, each of the bolts 58 being received in a suitable slot, notshown, in the forward end of the tubular member 30 to accommodatelimited rotation of the housingr 34 relative to the i member 30. Theoutery ends of-s'trapfsv 57 vare connected i "Abyfspaced braces 59 and60 to which 'is atxedfanV eloni gatedhlatch 'bar' 61` having its 'outerreduced end '62 Vengaging the Vundersurface of a latch projection63'on'l'atch part 54, as viewed'inFig'. 2f lThe engagement of part62Vwithprojection 63 prevents rotation of the plowcarrier-11 in onedirection. u

Braces 59 and 60 are aperturedto slidably receive a member 61, andafspring 66 surrounding plunger 64 engages brace'60 at Vone end and apin 67'at theA other to urge the plunger 64 outwardly in a direction toengage the other side of projection 63 on zlatch'part 54, on the sidetof projection 63 opposite the'part 62. In the position v virtue of theslotted connection of bolts 58 thereto.

'pair Hof latch plungers 64 and 65 on opposite sides of Y Latchreleasemeans 70 includes a crosshead 71 pivotally mounted on a lug 172affixed tol brace 59 and to one endof which is `connected an actuatingrod 73, the other end of which is pivotally connected to a pair of lugs74 securedto the bell housing 34. YIen the position of the parts shownin Figure 2, both of the latch parts 62 and 64 are in locking position.relative to the part 63 on the plow frame, so that the tool carrieris'held against rotation. Upon actuation `of the hydraulic ram 38 toretract the piston rod 42V in thecylinder, theconnector` 48 moves to theleft, rotating sprocket wheel to bellt housing 34 in a counter-clockwisedirection. Force isthus 'exerted ,through actuating rod 73 to rock thecrosshead 71"and retract latch plunger 6A4 .,"`Byl virtue of theslottedconnection of straps `57 and housing 34 to' the Vfront end of beam 30,Vand the slottedeonnection of bar 61 vto housing i 34, the latch releasemeans/ 70 is actuated Vfirst andrthen the further operation of thehydraulic Vram `38 rocks the tool carrier about its axisin `thedirection ofthe arrows in Figure 3, Vlatch plunger being extended underthe action of a'spring 75 engaging `brace 6,0 and `a pin 76.

Continued .rotation of'the tool-carrying subframe'll carries bodily withit'thelatch member 56 which swings around the axis of th'e c`a`r rier 11to its alternate position in latching relation with latch'part 53, theslanted outer edgeof latch plunger`65y sliding over th'e projection 77and being urged bye spring 75 linto locking position with respectthereto. w fProvision is thus.,v made `for releasably locking theplowfcarying subframe 11 in the operating position of either of the plowunits 32 and33, t

It is believed that the Ioperationf'of the two-way roll i over plow ofthis invention will be clearlyV understood from the foregoingdescription. It should likewise be` understood, however,y that theinvention has been Adescribed in its preferred embodiment only,- andthat modifications may be made in the invention without departing fromthe spirit thereof or the scope of the appended claims.

. What is claimed is: y

l. In, a two-way plow, Vasupport,V a plow carrier mounted on the supportand rotatable about a longitudinal axis to, alternately'dispose theplows in operation, drive means extendingbetween the support and thecarrier for rocking the latter in "opposite directions to positionsforright and left-handplowing, single releasable latch means mountedon thecarrierV for` rotation therewith and cooperable with the support to lockthe carrier in either operatingposition thereof, and` link meansconnected to the carrier and to the latch means operative in eitherposition of the latch means to release the latter and accommodaterotation of the carrier.

2. The invention set forth in claim 1, wherein there is lost motionprovided in the mounting of the latch means on the carrier and apredetermined limited rotation of the carrier occurs to accommodaterelease of said latch means prior to rotation of the latch means withthe carrier.

3. In a two-way plow, a support, a plow carrier mounted o n the supportand rotatable about a longitudinal axis to alternately dispose the plowsin operation, drive means extending between the support and the carrierfor rocking vthe latter in opposite directions to positions for rightand left-hand plowing, single releasable latchmeans mounted on thecarrierufor rotation therewith and coopcrable with the support to lockthe carrier in either operating position thereof, and link meansconnected to the carrier and to the latch means operative in eitherposition of the latch meansft'orelease"thelatter and yaccommodaterotation of the carrier, said drive means including'a rotat- "able'member mounted onthe carrierand drive means therefor, anda slottedconnection between said latch means and said rotatable member adapted toaccommodate limited initial rotation of said member prior to rotation ofthe latch means. e i

4. In a two-way plow of the type having right and lefthand plowing unitsmounted on a subframeurotatable about ya longitudinal axis with respectto the direction of travel to dispose said plow units in alternateoperating positions, a main frame rotatably supporting said subframe,and means for rotating the subframe, comprising a rotatablemembermounted onthe subframe 'coaxially therewith,'a drive memberoperatively connectedtosaid rotatable member, a hydraulic ram mounted atone end j on the main frame, means connecting the otherV end of the ramto said drive member, said connecting means being reciprocable by theoperation of the ram to drive said drive member and revolve the subframebetween said alternate operating positions, a pair ofV latchhparts onthe main frame, a latch member mounted on the subframe alternatelyrotatable therewith between positions in cooperative relation with saidlatch parts, means operatively connecting said rotatablev member to saidlatch member for alternately revolving the latter to latch positionswith respect to said latch parts to hold the plow units inV theirrespective operating positions, and

additional means connecting said rotatable member to said latch memberfor unlocking Vthe subframe upon rotation of said rotatable member.

5. In a two-way plow of the type having right and lefthand plowing unitsmounted on a subframe rotatable about a longitudinal axis with respectto the direction of travel to dispose said plow units in alternateoperating positions, a main frame rotatably supporting said subframe,and means for rotating the subframe, comprising a rotatable membermounted on the subframe coaxially therewith, an idler wheel on the mainframe, a drive member trained around said rotatable memberA and saidwheel, a hydraulic ram mounted at one end on themain frame, meansconnecting the other end of the ram to said drive member, saidconnecting means being reciprocable by the operation of the ram to drivelsaid drive member and revolve the subframe between said alternateoperating positions, a pair of latch parts on 4the main frame, a latchmember mounted on the subframe alternatelyl rotatable therewith betweenpositions in cooperative relation with said latch parts, meansoperatively connectirig said rotatable member to said latch member foralternately revolving the latter to latch positions with respect tosaidvlatch parts to hold the plow Yunits in their-respective operatingpositions, latch release means carried by said latch member forunlocking the subframe to accommodate rotation thereof, and linkmeans'connecting said rotatable member to said latch 5 Y release meansfor releasing the latter in response to rotation of said rotatablemember to revolve the subframe.

6. In a two-way plow of the type having right and lefthand plowing unitsmounted on a subframe rotatable rotatable member mounted on the subframecoaxially and for rotation therewith, a drive member operativelyconnected to said rotatable member, a hydraulic ram mounted at one endon the main frame, means connecting the other end of the ram to saiddrive member, said connecting means being reciprocable by the operationof the ram to drive said drive member and revolve the subframe betweensaid alternate operating positions, a pair of latch parts on the mainframe, a latch member mounted on the subframe alternately rotatabletherewith between positions in cooperative relation with said latchparts, means operatively connecting saidy rotatable member to said latchmember for alternately revolving the latter to latch positions withrespect to said latch parts to hold the plow units in theirrespectiveoperating positions, latch release means carried by said latch memberfor unlocking the subframe to accommodate rotation thereof, and linkmeans connecting said rotatable member to said latch release means forreleasing the latter in response to rotation of said rotatable member torevolve the subframe, the connection of said rotatable member to saidlatch member including lost motion accommodating release of said latchmeans by said link means prior to rotation of the latch member with thesubframe.

7. In a two-way plow of the type having right and lefthand plowing unitsmounted on a subframe rotatable about a longitudinal axis with respectto the direction of travel to dispose said plow units in alternateoperating positions, a main frame rotatably supporting said subfrarne,and means for rotating the subframe, comprising a rotatable membermounted on the subframe coaxially for rotation therewith, a drive memberoperatively connected to said rotatable member, a hydraulic ram mountedon one end on the main frame, means connecting the other end of the ramto said drive member, said connecting means being reciprocable by theoperation of the ram to drive said drive member and revolve 'thesubframe between said alternate operating positions, a pair of latchparts on the main frame, a latching device mounted on the subframealternately rotatable therewith between positions in cooperativerelation with said latch parts, said latching device having meansmovable into and out of latching relation with the respective of saidlatch parts on the main frame, and means for operating said latchingdevice comprising an actuating member connecting said latching device tosaid rotatable member and operative upon rotation thereof to releasesaid latching device. n

8. The invention set forth in claim 7, wherein said latching deviceincludes a pair of movable members, one of which is retractable torelease it from latching relation with one of said latch parts on themain frame and the other of which is simultaneously extensibleto disposeit in position for latching relation with the other of said 'latchparts. l

References Cited in the tile of this patent UNITED STATES PATENTS2,633,788 Nelson Apr. 7, 1953 2,666,376 Pursche Ian. 19, 1954 2,698,563Edwards Ian. 4, 1955 2,714,345 Wilkerson et a1 Aug. 2, 1955

